... Japan advanced level among similar products.The magnetic powder’s color is in line with Japan ... has good hardness!Can match with the magnetic powder brake and clutch from home and abroad, ... is still smooth and has no corrosion spots3.Magnetic PowderMajor components - iron, cobalt, nickel 4 ... machinery, bag making machinery, restore the tension of magnetic clutch,Brakes, uniaxial, biaxial, hollow shaft, etc ...